共 124 条
[31]
BLAAUW A, 1944, B ASTR I NETHERLANDS, V10, P19
[32]
BLAAUW A, 1959, 10 INT ASTR UN S, P105
[33]
BLAAUW A, 1960, 1960 NUFFIC INT SUMM
[34]
Blaauw A., 1952, B ASTRON I NETHERLAN, V11, P405
[35]
BOK BJ, 1934, 384 HARV CIRC
[36]
BORGMAN J, IN PRESS
[37]
Borgman J, 1960, B ASTRON I NETHERLAN, V15, P255
[38]
BOSS B, 1937, 1950 GEN CAT 33342 S, V1
[39]
BOSS L, 1910, PRELIMINARY GENERAL
[40]
Braes L.L.E., 1962, BAN, V16, P297